Today, we will have a look at Fixing a Position. When we are at sea, there are two important things we need to know - where are we and how do we get from here to where we want to get to? Today, of course, with the digital readout 24x7 of our latitude and longitude from our boat's GPS and from each crew member's handheld GPS plotter, we know precisely where we are, and we should and do use this information all the time. But we also need to back it up we something we may rely on when all the electrical equipment fail...